Fortress De Roovere is part of the Dutch Water Line. It is an earth fortress dating back to as early as the 17th century. It is close to Bergen op Zoom, where my parents were born, and Halsteren. The Dutch Water Line was a series of water-based defenses conceived by Maurice of Nassau. In case of an attack it turned Holland into a well-protected island.
Recently Fortress De Roovere has been renovated with the help of the Friends of Fort de Roovere, which includes the removal of undergrowth and deepening the moat. Early this year I visited this fortress with some family members who are tourist guides in Bergen op Zoom. Besides being a nice historical place, it also has some interesting architectural art constructs: the Moses bridge and the Pompejus Tower.
The Moses bridge lets you cross the moat below the water level: the top of the flanks of the bridge are at the water level of the moat. In a way it is a “reversed” bridge.
The Pompejus Tower was constructed only recently, named after Pompejus de Roovere. It is a tilted tower, which means that when you are at the top you are right above the moat. It is not just a tower from which you have a nice overview of the surrounding woods and meadows, it is also an open-air theater.
I recommend you to visit this fortress in combination with visiting Bergen op Zoom, which has a well-preserved center.